There is no health without mental health. Mental well-being and mental illness are essential topics for 21st century health care systems and for society. With advances in neuroscience and changes to our health care delivery systems, understanding mental health and illness has never been as critical as it is today. This series, designed by professors in the UCSF Department of Psychiatry, will explore a variety of topics from defining mental health and illness, an integrative approach to mental illness, the neuroscience of mental disorders, current opportunities, challenges, and dilemmas in the field, and the public health implications of mental illness.